Cheyenne, WY Weather & Growing Conditions
Tonight
51°F
Slight Chance Showers And Thunderstorms then Mostly Cloudy
A slight chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 51. West wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 5 mph W | 18% |
| Saturday | 70°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 10 mph SW | 38% |
| Saturday Night | 45°F | Partly Cloudy then Slight Chance Rain Showers | 5 to 10 mph SW | 16% |
| Sunday | 65°F | Partly Sunny then Chance Showers And Thunderstorms | 10 mph NW | 41% |
| Sunday Night | 42°F | Partly Cloudy | 5 to 10 mph W | 9% |
| Monday | 66°F | Sunny | 5 to 10 mph SSW | 3% |
| Monday Night | 45°F | Partly Cloudy | 5 to 10 mph S | 5% |
| Tuesday | 70°F | Mostly Sunny | 5 to 10 mph S | 11% |
| Tuesday Night | 48°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 to 10 mph S | 33% |
| Wednesday | 73°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph S | 29% |
| Wednesday Night | 49°F | Mostly Cloudy | 5 mph WSW | 12% |
| Thursday | 72°F | Mostly Sunny | 5 to 10 mph ENE | 13% |
| Thursday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph S | 18% |
| Friday | 73°F | Mostly Sunny | 5 to 10 mph S | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cheyenne, WY
Last spring frost
May 14
First fall frost
Oct 1
Growing season
139 days
Hardiness zone
5b
Explore more for Cheyenne, WY: full frost dates · planting calendar · Wyoming frost dates
Climate data from the nearest NOAA station, Cheyenne Wfo, Wy (7.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.